AGASC ID 504894856

Info

Last Obs. 2023:224:11:50
magcatalog 8.96 ± 0.07
mag3 arcsec 8.99 ± 0.02
mag5 arcsec 8.99 ± 0.02
Nobs 26 (0 bad)
fok 97.5%
f3 arcsec 97.6%
f5 arcsec 97.6%

Timeline

Observation Info

OBSID Time Slot Row Col N Nmag est ok Nout fmag est ok fdr3 fdbox5 fmag est ok 3 ⟨ δ mag100s ⟨ mag ⟩ σmag Comments
4731 2004:019:05:44:08.991 6 249.5 399.1 27952 27867 40 99.9% 100.0% 100.0% 99.9% 0.03 8.98 0.00 --
5296 2004:021:10:28:25.980 6 249.5 399.1 46222 44751 42 99.9% 70.4% 70.4% 70.3% 0.03 8.98 0.00 --
5297 2004:024:01:24:22.823 6 249.5 399.1 11069 11009 5 100.0% 100.0% 100.0% 100.0% 0.03 8.98 0.00 --
5300 2004:067:09:08:06.313 6 -119.4 438.2 25813 25725 28 99.9% 100.0% 100.0% 99.9% 0.03 8.97 0.00 --
5309 2004:074:01:38:41.667 6 -205.0 398.9 35020 34943 40 99.9% 100.0% 100.0% 99.9% 0.02 8.98 0.00 --
4732 2004:079:08:04:16.976 6 -205.0 398.9 34827 34758 39 99.9% 100.0% 100.0% 99.9% 0.02 8.98 0.00 --
5337 2004:187:18:26:14.774 6 -288.5 -302.2 5003 4917 2 100.0% 100.0% 100.0% 100.0% 0.02 8.98 0.00 --
5338 2004:188:13:13:08.458 6 -288.5 -302.2 14171 14059 6 99.5% 100.0% 100.0% 99.5% 0.03 8.97 0.00 --
5339 2004:189:13:09:12.313 6 -288.5 -302.2 7132 7076 5 99.9% 100.0% 100.0% 99.9% 0.02 8.97 0.00 --
5340 2004:190:10:50:58.146 6 -288.5 -302.2 26968 26875 27 99.9% 100.0% 100.0% 99.9% 0.02 8.98 0.00 --
4734 2004:193:01:26:43.567 6 -288.5 -302.2 17607 17518 19 99.9% 100.0% 100.0% 99.9% 0.02 8.98 0.00 --
6114 2004:249:18:10:06.409 6 157.6 -407.6 32836 32693 38 99.7% 100.0% 100.0% 99.7% 0.02 9.00 0.00 --
6115 2004:252:18:12:04.967 6 157.6 -407.6 18325 18255 17 99.9% 100.0% 100.0% 99.9% 0.02 9.00 0.00 --
6118 2004:255:15:00:03.564 6 157.6 -407.6 5754 5694 3 99.9% 100.0% 100.0% 99.9% 0.02 9.00 0.00 --
4735 2004:256:12:43:23.270 6 157.6 -407.6 14292 14211 13 99.9% 100.0% 100.0% 99.9% 0.02 9.00 0.00 --
4736 2004:306:18:24:57.930 7 459.0 -69.3 38297 38196 40 99.9% 100.0% 100.0% 99.9% 0.02 9.00 0.00 --
6152 2004:312:06:34:56.807 7 459.0 -69.3 80043 79639 89 99.9% 100.0% 100.0% 99.9% 0.02 9.00 0.00 --
6170 2004:357:01:02:55.365 6 408.5 306.0 23756 23668 34 99.9% 100.0% 100.0% 99.9% 0.03 8.97 0.00 --
6175 2004:359:16:23:25.528 6 408.5 306.0 20150 20077 22 99.9% 100.0% 100.0% 99.9% 0.03 8.97 0.00 --
6169 2004:365:01:46:45.504 6 376.2 347.7 14784 14718 13 99.9% 100.0% 100.0% 99.9% 0.02 8.98 0.00 --
4737 2005:001:14:16:30.167 6 362.8 362.6 10879 10808 11 99.9% 100.0% 100.0% 99.9% 0.02 8.99 0.00 --
14341 2011:239:10:16:20.812 5 62.6 -397.5 24376 24259 38 99.9% 100.0% 100.0% 99.8% 0.03 9.00 0.00 --
19304 2017:312:20:33:29.228 6 406.6 27.3 18436 18348 19 99.9% 100.0% 100.0% 99.9% 0.04 8.97 0.00 --
27862 2023:151:15:20:51.224 4 -466.1 -144.7 5038 4976 3 99.9% 100.0% 100.0% 99.9% 0.07 9.01 0.00 --
27863 2023:223:18:00:04.466 5 -70.9 -465.3 2803 2738 0 99.9% 100.0% 100.0% 99.9% 0.06 8.96 0.00 --
28374 2023:224:11:50:36.908 5 -73.0 -464.4 2549 2464 1 99.8% 100.0% 100.0% 99.8% 0.08 8.97 0.00 --

  • sample: One sample of ACA image telemetry. This could be a real image readout or it could be a null 4x4 image when the ACA is not tracking. Be aware that the sample period is faster for null 4x4 images (1.025 sec) than for typical 6x6 or 8x8 tracked images (2.05 or 4.1 sec respectively).
  • Kalman samples: Subset of samples when ACA could be tracking stars (AOPCADMD == NPNT & AOACASEQ == KALM)
  • dr3: Subset of tracked Kalman samples with radial centroid residual < 3 arcsec. This corresponds to "high quality" readouts. This effectively includes the track subset (AOACFCT == TRAK) because readouts with no TRAK are assigned an infinite centroid residual.
  • dbox5: Subset of tracked Kalman samples with centroid residual within a 5 arcsec box. This corresponds to spatial filter used by the OBC for inclusion in Kalman filter. This effectively includes the track subset (AOACFCT == TRAK) because readouts with no TRAK are assigned an infinite centroid residual.
  • track: Subset of Kalman samples where the image is being tracked (AOACFCT == TRAK)
  • sat_pix: Subset of Kalman samples with saturated pixel flag OK (AOACISP == OK)
  • ion_rad: Subset of Kalman samples with ionizing radiation flag OK (AOACIIR == OK)
  • mag_est_ok: Subset of Kalman samples that have a magnitude estimate (track & ion_rad)
  • n_total: Total number of sample regardless of OBC PCAD status
  • n: Synonym for n_total
  • n_kalman: Number of Kalman samples
  • n_dr3: Number of dr3 samples.
  • n_dbox5: Number of dbox5 samples.
  • n_track: Number of track samples.
  • n_ok_3: Number of (track & sat_pix & ion_rad & dr3) samples
  • n_ok_5: Number of (track & sat_pix & ion_rad & dbox5) samples
  • n_mag_est_ok: Number of (track & ion_rad) samples
  • n_mag_est_ok_3: Number of (track & ion_rad & dr3) samples
  • n_mag_est_ok_5: Number of (track & ion_rad & dbox5) samples
  • f_dr3: Fraction of mag-est-ok samples with centroid residual < 3 arcsec((mag_est_ok & n_dr3)/n_mag_est_ok)
  • f_dbox5: Fraction of mag-est-ok samples with centroid within 5 arcsec box((mag_est_ok & n_dbox5)/n_mag_est_ok)
  • f_mag_est_ok: n_mag_est_ok_3/n_kalman. This is a measure of the fraction of time during an observation that a magnitude estimate is available.
  • f_mag_est_ok_3: n_mag_est_ok_3/n_kalman.
  • f_mag_est_ok_5: n_mag_est_ok_5/n_kalman.
  • f_ok: n_ok_5 / n_kalman. Same as f_ok_5
  • f_ok_3: n_ok_3 / n_kalman. This is a measure of the fraction of time during an observation that the Kalman filter is getting high-quality star centroids.
  • f_ok_5: n_ok_5 / n_kalman. This is a measure of the fraction of time during an observation that the Kalman filter is getting any star centroid at all. This includes measurements out to 5 arcsec box halfwidth, so potentially 7 arcsec radial offset.